Improvement in paper-files



H.W. D. DUHLP.

Paper-Wies.

Patented March 24, i874.

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STATES HENRY W. D. DUNLOP, OF DUBLIN, IRELAND.

IMPROVEMENT IN PAPER-FILES.

Specification forming part of Letters Patent No. 145,878, dated March24, 1874; application filed May 5, 1873.

To all whom it may concern:

Be it known that I, HENRY WALLACE DovEToN DUNLOP, of Dublin, Ireland,have invented a new or Improved'Paper-Fle, of which the following is aspeeication:

My invention is chiefly designed to supersede the present book indexesand catalogues for use in libraries, public and other offices, banks,courts, and elsewhere, and which, by the constant alteration andinterpolation of entries, involve constant trouble, and have frequentlyto be recommenced, in order to keep the entries in their proper order.It is also applicable for persons engaged in compilin g dictionaries orencyclopedias.

This invention consists in the combination ot' certain slotted index oralphabet cards, with a securing-rod and an inclosing-case, as will befully described hereinafter.

In the drawings is represented a perspective view of my invention.

A is a frame, of convenient size and shape, i'or supporting the labels.It may be formed to be placed in and drawn from a troughshapedrecipient, or supported in any convenient manner. The frames may bearranged side by side and rest on edges forming guideways for them. D Ba-re pla-tes, counters, la bels, or disks, which may be of card-board,metal, vulcanized rubber, bone, or other suitable material. Each labelis slotted at c, to permit the insertion of a rod, D, resting at itsends in bearings provided for it at the ends of the frame A, by whichrod, When in place, the labels are secured from being removed orunintentionally displaced. The said rod may he held in place by apadlock, as shown, or other like contrivance. Each label bears a properinscription or entry affixed to its upper portion. The labels arepreferably made of vegetable parchment, or other similar substance, suchas paper treated with chloride ot' zine, to harden it, a slot beingformed in each of the said tickets, as above described, for

the passage of the rod. The end of the said rod is bent and formed witha slot, D1. An eye, D2, is screwed in the end of the frame. The link ofa padlock, f, is passed through the said slot and ring, and locked, tosecure the rod, or the rod may be locked in any other suitable manner.The labels may be raised and bent back, as shown.

Let it be supposed that the apparatus is applied to the cataloguing ot'a library, and that each frame holds a number of labels, according tothe different letters of the alphabet, one or more frames for eachletter, as may be required. As each book is catalogued alphabetieally, areference is marked on the labels, or Written or printed on a piece ofpaper, which is pasted or otherwise attached to one of the labels.ranged in their proper alphabetical or dictionary order or position. Therod, which was withdrawn during the arrangement ot' the labels, isreplaced by causing it to pass through all the labels, which are therebysecured in their position.

For facility of reference, either of the plates or labels B may beraised as far as permitted by the slot, and if the plate or label isiexible, its upper portion, bearing the inscription or entry, may beturned over to admit ot' any alteration in, or addition to, the entry orinscription being conveniently made.

I claim as my inventionl. The described apparatus, consisting,essentially, of slotted cards adapted for longitudinal movement,substantially as described, a securing-rod, and a suitable support forthe rod, combined as and for the purpose set forth.

and slotted cards B, as described.

H. IV. D. DUNLOP, O. E. Vitnesses:

JOHN ONELLL, H. E. GRIBBON.

The labels so marked are ar-A` 2. The combination of the case A, rod D,

